Roy Upton

American herbal pharmacopoeia

2008

Black Haw Bark, Viburnum Prunifolium

2000

Cramp Bark, Viburnum Opulus

2000

Astragalus Root, Astragalus Me

Astragalus Root, Astragalus Membranaceus

1999

Schisandra Berry Schisandra Ch

Schisandra Berry Schisandra Chinensis

1999

Willow Bark, Salix Spp

1999